This is a great question,
as I can actually answer it.


My computing teacher during my AS-Levels was a chap named Mr Nield, who I had heard rumours of his impressive false resumé which apparently included teaching rugby player Austin Healy to side step, and swimming the channel (less believable when reminded of his near 20 stone weight).

I kind of expected to hear one or two stories within my first year with him, but in the space of one term some of his life stories he told me included:

-Staying at a small hotel with five other men called Peter Nield.
-Becoming World Tiddlywinks Champion
-Becoming World Ludo Champion (not too sure on the skill/luck ratio in Ludo)
-Going to the White House and finding a secret passage to the Oval Office, and greeting the president (best not tell the terrorists that gem)
-Designing Brian May's swimming pool in the shape of a bass guitar (at which point we reminded him that Brian May didn't play bass - his response 'He must have got it wrong')
( Sunshine Elephant, Thu 29 Nov 2007, 21:28, 3 replies)

rugby
I went to the same school as Austin Healy. He was taught (in part anyway for five years), by a Mr Reagan, who played for the England rugby squad in the 50's or 60's.
I don't even remember Austin Healy, apart from being a total meathead (he was in the upper year), but I thought I'd put my bit forward.
(Nibi, Fri 30 Nov 2007, 0:09, closed)

He taught a car to side step?

(Cuthbert Annihilator, Fri 30 Nov 2007, 14:16, closed)

Swimming the channel...
Back in secondary school I had a rather rotund History teacher who claimed to have swam the channel. Judging from his size, it was more likely that he floated across so no-one believed him...

until the day he brought in the newspaper cuttings which documented the aforementioned event. Turns out he wasn't always that large.

(Mr S, if you are reading this, thnx for being one of the better teachers at my school, even if my brother hated you)
(Heggy, Tue 4 Dec 2007, 22:16, closed)